Acta Iranica / Mary Boyce
Efektif dan efisien dalam rapat berbahasa Inggris / Malcolm Goodale
Ruler of thumb : a guide for writers
English vocabulary in use
A writer's resource : a handbook for writing and research
Best friends student book 4
The primary english encyclopedia : the heart of the curriculum
Interactions 2 : listening/speaking
Interactions 1 :listening
Workbook grammar form and function 3A